Ceramics International最新文献

{"title":"Deciphering the structure, dielectric, and energy-storage performances of A-site stoichiometric/nonstoichiometric (Na0.5Bi0.5)TiO3-based ceramics via a two-step optimization design","authors":"Xiangjun Meng ,&nbsp;Ying Yuan ,&nbsp;Bin Tang ,&nbsp;Enzhu Li","doi":"10.1016/j.ceramint.2024.12.259","DOIUrl":"10.1016/j.ceramint.2024.12.259","url":null,"abstract":"<div><div>Herein, the stoichiometric ((Na_0.5Bi_0.5)TiO₃ (S_0(N=B)) and (Na_0.36Bi_0.36Sr_0.28)TiO₃ (S_28(N=B))) and nonstoichiometric ((Na_0.3Bi_0.38Sr_0.28)TiO₃ (S_{28(N &lt; B)}) and (Na_0.42Bi_0.34Sr_0.28)TiO₃ (S_{28(N &gt; B)})) ceramics were fabricated by a conventional solid-state reaction method. Subsequently, the effects of A-site stoichiometry/nonstoichiometry on their structural, dielectric, and energy-storage performances were investigated. All of them exhibit a single perovskite phase without any impurity phase. S_0(N=B) shows rhombohedral with <em>R</em>3<em>c</em> symmetry, while the other three feature the coexistence of rhombohedral with <em>R</em>3<em>c</em> symmetry and tetragonal with <em>P</em>4<em>bm</em> symmetry. Interestingly, there are significant microstructure and dielectric differences among them. The average grain sizes of S_28(N=B) and S_{28(N &lt; B)} are smaller than those of S_0(N=B) and S_{28(N &gt; B)}. Notably, S_{28(N &lt; B)} achieved a significant improvement in dielectric properties. It also exhibited a slim and pinched polarization–electric field hysteresis loop with the largest polarization difference and the smallest electric hysteresis loss, leading to superior energy-storage performance compared to the other three. Subsequently, a tape-casting method (TCM) was employed to prepare S_{28(N &lt; B, TCM)} with improved microstructure and restrained electrical conduction behavior, thereby strengthening the electric breakdown strength from 145 to 200 kV/cm. Consequently, a large recoverable energy density of 2.53 J/cm³ and a high energy conversion efficiency of 83.71 % were realized in S_{28(N &lt; B, TCM)}. Additionally, excellent frequency- and temperature-dependent energy-storage and/or charge-discharge stabilities were confirmed. These results indicate that the structure and electrical properties of (Na_0.5Bi_0.5)TiO₃-based ceramics are sensitive to A-site stoichiometry/nonstoichiometry. They also highlight the superiority of S_{28(N &lt; B, TCM)} over the others, suggesting its promising potential in the dielectric energy-storage field. Furthermore, this work would provide valuable insights into the design and performance optimization of dielectric energy-storage materials/capacitors.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 8299-8309"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modulation of negative thermal expansion and luminescence anti-thermal quenching properties of Er3+-Yb3+ co-doped Sc2Mo3(1+x)O12 via host matrix engineering","authors":"Yun He,&nbsp;Zexiong Wang,&nbsp;Ruoshan Lei,&nbsp;Shilong Zhao,&nbsp;Shiqing Xu","doi":"10.1016/j.ceramint.2024.12.352","DOIUrl":"10.1016/j.ceramint.2024.12.352","url":null,"abstract":"<div><div>Although rare-earth (RE³⁺)-doped negative thermal expansion (NTE) luminescent materials exhibit promising anti-thermal quenching effects, limited progress has been made in modifying their NTE and luminescence performances. This study investigates the impacts of Mo⁶⁺ ion stoichiometry on the crystal structure, NTE behavior, and photoluminescence (PL) thermal response characteristics in Er³⁺, Yb³⁺ co-doped Sc₂Mo_3(1+x)O₁₂ phosphors (−0.1 ≤ x ≤ 0.1). The results reveal that augmenting the Mo⁶⁺ content results in a transition from three-dimensional to two-dimensional NTE behavior in the host material due to the change in steric hindrance. This transition modulates cross-relaxation and back energy transfer processes between the doped Er³⁺ and Yb³⁺ ions. Consequently, the thermal enhancement factor for the upconversion luminescence of Er³⁺ ions decreases with increasing Mo⁶⁺ content, whereas the factor for near-infrared downshifting luminescence increases. Additionally, using the luminescence intensity ratio between the 1550 nm emission of Er³⁺ and the 1050 nm emission of Yb³⁺ for temperature sensing, a maximum relative sensitivity of 3.97 % K⁻¹ is achieved in Sc₂Mo_3.21O₁₂: Er³⁺, Yb³⁺. These findings provide insights into the synchronous regulation of the NTE and luminescence properties of RE³⁺-doped NTE phosphors for versatile applications.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 9189-9198"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Novel p-ZnCo2O4/n-Bi2WO6 heterojunctions for efficient rhodamine B and tetracycline photodegradation, and Cr(VI) photoreduction under visible LED and sunlight irradiation","authors":"María Luisa Herrera-Mares ,&nbsp;Brenda Azharel Jiménez-López ,&nbsp;Roberto Leyva-Ramos ,&nbsp;Araceli Jacobo-Azuara ,&nbsp;Joelis Rodríguez-Hernández ,&nbsp;René Darío Peralta-Rodríguez ,&nbsp;Ignacio René Galindo-Esquivel ,&nbsp;Esmeralda Mendoza-Mendoza","doi":"10.1016/j.ceramint.2024.12.355","DOIUrl":"10.1016/j.ceramint.2024.12.355","url":null,"abstract":"<div><div>Coupling of photocatalysts extends the photoresponse interval and improves the photogenerated pair migration. Herein, novel visible-light heterojunctions (HETs) of n-Bi₂WO₆ and p-ZnCo₂O₄ (weight ratios from 2:1 to 16:1) were prepared by two straightforward procedures, coprecipitation and hydrothermal, and applied to the photodegradation of rhodamine B (RhB) and tetracycline (TC), as well as photoreduction of chromium (VI) (Cr(VI)) under 100 W blue LED and sunlight irradiation. Several characterization techniques were used to analyze the physicochemical properties of the HETs, revealing an effect on the Bi₂WO₆ content in HETs. The 16Bi₂WO₆/ZnCo₂O₄ obtained by coprecipitation (16BWO/LDO-C) showed superior degradation of RhB compared to the other synthesized HETs, and the degradation percentage of RhB (%X_RhB) attained was 100 % (<em>k</em>_<em>1</em> = 1.13 × 10⁻² 1/min) within 300 min using a catalysts dosage of 100/100 mg/mL, RhB initial concentration of 5 mg/L and pH 3. In addition, this HET achieved a %X_TC of 83 % (<em>k</em>_<em>2</em> = 0.81 × 10⁻¹ L/mg min) in 90 min, and %X_Cr(VI) of 96 % (<em>k</em>_<em>1</em> = 3.89 × 10⁻² 1/min) in 60 min. Sunlight boosted the rate of photocatalytic processes by 2.8, 1.3, and 1.6 times for RhB, TC, and Cr(VI), in that order, compared to LED irradiation. After three photocatalytic cycles, the 16BWO/LDO-C showed high performance (%X_RhB = 100 % and %X_TC = 78 %), confirming its high stability. At the same time, trapping assays revealed that holes and superoxides are the main species oxidizing RhB and TC molecules, consistent with the plausible charge transfer mechanism for 16BWO/LDO-C. This study provides new insights into designing innovative and high-performance BWO/LDO HETs to remove organic and inorganic pollutants from water.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 9209-9223"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical and morphological investigation on the effect of reduction temperature on the electrochemical behavior of a novel magnéli phase nanotubes on titanium","authors":"K. Jafarzadeh,&nbsp;A. Alishavandi,&nbsp;S.M.M. Mirali,&nbsp;Y.M. Oskoei","doi":"10.1016/j.ceramint.2024.12.358","DOIUrl":"10.1016/j.ceramint.2024.12.358","url":null,"abstract":"<div><div>In this study the effect of hydrogen reduction temperature on the electrochemical performance of magneli phase titanium oxide nanotubes in oxygen evolution reaction (OER) was investigated. Anodizing of titanium led to the production of TiO₂ nanotubes. The anodized layer was annealed at 480 °C. The layer was finally exposed to a reducing atmosphere at temperature range of 700–900 °C. The surfaces of the samples were examined using scanning electron microscopy (SEM). The phases on the surface were characterized using X-ray diffraction (XRD) method. The electrochemical properties of the surface layer were studied using electrochemical impedance spectroscopy analysis (EIS) and cyclic voltammetry. The results showed that the nanotubes produced on the surface are completely destroyed when the heat treatment temperature is increased to 900 °C. Furthermore, the surface conductivity decreased as the titanium oxide in the rutile phase increased and the amount of Ti₄O₇ in the Magnéli phase decreased. During the reduction process, the maximum proportion of the Magnéli phase was reached at 700 °C. This sample also has the lowest charge transfer resistance value, which qualifies it for use as a novel electrocatalyst for oxygen evolution reactions.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 9231-9238"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal and ionic conductivity improvement of LAGP glass ceramic and fiber thermal drawing","authors":"Zhongyue Wang ,&nbsp;Qi Ma ,&nbsp;Zhiwen Wu ,&nbsp;Jie Zhou ,&nbsp;Qing Zhang ,&nbsp;Qi Zhang ,&nbsp;Peng Lv ,&nbsp;Kehan Yu ,&nbsp;Wei Wei","doi":"10.1016/j.ceramint.2024.12.292","DOIUrl":"10.1016/j.ceramint.2024.12.292","url":null,"abstract":"<div><div>Composite solid electrolytes (CSEs) are attractive candidates for all-solid-state lithium-ion batteries (ASSLIBs), and incorporating active ceramic fibers within polymer matrix represents an ideal structure for maximizing ionic conductivity. LAGP glass exhibits the best thermal stability among the limited lithium-ion conductors that can exist in glassy state, but it is insufficient for thermal drawing into fibers directly. By systematically studying the thermal properties, ionic conductivity and microstructure of LAGP modified by single component (Y₂O₃/B₂O₃/SiO₂) and multicomponent (Re₂O₃-B₂O₃) (Re, Rare earth), Re₂O₃-B₂O₃ co-modified LAGP shows the most competitive thermal stability and ionic conductivity. Among them, LAGP-0.06Y₂O₃-0.05B₂O₃ glass reveals excellent thermal stability (ΔT = 145 °C), and a dense ceramic electrolyte with an ionic conductivity of 3.11 × 10⁻⁴ S cm⁻¹ and low active energy (E_a) of 0.38 eV can be achieved. LAGP-0.06Y₂O₃-0.05B₂O₃ glass fibers are thermally drawn for the first time, and a modified LAGP ceramic fiber with high ionic conductivity up to 3.87 × 10⁻⁴ S cm⁻¹ is obtained. The short preparation period, high efficiency and large-scale manufacturability, controllable size and high ionic conductivity make LAGP-0.06Y₂O₃-0.05B₂O₃ ceramic fibers highly competitive for use in high-performance CSEs containing active ceramic fibers.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 8615-8626"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modulating ZnO nanoparticle photoluminescence through Ce³⁺-Induced defect engineering: A study of microstructural and spectroscopic properties","authors":"Dharani Kolli ,&nbsp;Sonali Biswas ,&nbsp;A. Venkateswara Rao ,&nbsp;Sayed M. Saleh ,&nbsp;S. Shanmugan","doi":"10.1016/j.ceramint.2024.12.278","DOIUrl":"10.1016/j.ceramint.2024.12.278","url":null,"abstract":"<div><div>This work investigates the effect of Cerium ion (Ce³⁺) doping on the light-matter interactions and morphology of chemically synthesized ZnO nanoparticles are studied as a function of Ce³⁺ doping concentration of <span><math><mrow><msub><mtext>Zn</mtext><mrow><mn>1</mn><mo>−</mo><mi>x</mi></mrow></msub><msub><mtext>Ce</mtext><mi>x</mi></msub><mi>O</mi></mrow></math></span> (<span><math><mrow><mi>x</mi><mo>=</mo><mn>0</mn><mo>,</mo><mn>0.1</mn><mo>,</mo><mn>0.2</mn><mtext>,</mtext></mrow></math></span> and <span><math><mrow><mn>0.3</mn></mrow></math></span>). The impact of Ce³⁺ doping on the electronic structure and morphology of chemically co-precipitated ZnO nanoparticles is examined. The optical, morphological, and structural properties of ZnO nanoparticles are modified by Ce³⁺ doping. The lattice parameters of the wurtzite hexagonal ZnO phase, with a secondary CeO₂ phase, were slightly distorted by Ce³⁺ substitution for Zn²⁺ ions. This was confirmed by Rietveld refinement of X-ray diffraction (XRD) data using FullProf software. A comprehensive study was conducted to investigate the morphology, particle size distribution, and shape of the Ce³⁺-doped nanoparticles. TEM and SEM were used to characterize these structural properties. UV–vis spectroscopy showed a red-shift in the bandgap due to Ce³⁺ doping, with bandgap energy (E_g) of 2.81 eV; an absorption edge (E_u) = 1.29 eV. Localized energy states were formed within the band structure, as evidenced by the red-shift. Ce³⁺ doping induced a red-shift in the Zn-O bond vibrational mode, as observed by FTIR spectroscopy. The increased PL emission intensity suggested improved optical properties. Ce³⁺ doping significantly modified the optical properties of the ZnO nanoparticles. This study highlights the potential of Ce³⁺-doped ZnO nanoparticles for optoelectronic applications requiring tunable optical properties. Further investigation into the antibacterial properties of these synthesized NPs is warranted, as they show promise in this area.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 8472-8479"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterization of nickel ferrite (NiFe2O4) nano-catalyst films for ciprofloxacin degradation","authors":"Husseini Sulemana ,&nbsp;Chengwu Yi ,&nbsp;Muhammad Imran Nawaz ,&nbsp;Bo Zhang ,&nbsp;Rongjie Yi ,&nbsp;Jianan Zhang ,&nbsp;Emmanuel Nkudede","doi":"10.1016/j.ceramint.2024.12.268","DOIUrl":"10.1016/j.ceramint.2024.12.268","url":null,"abstract":"<div><div>The challenges associated with efficient removal of ciprofloxacin (CIP), such as low efficiency, high energy consumption, and the generation of harmful by-products have prompted the development of environmentally friendly degradation techniques. This study investigates the synthesis and characterization of nickel ferrite doped with cellulose acetate (NiFe₂O₄/CA) composite films and coupling with Dielectric Barrier Discharge (DBD) reactor to facilitate ciprofloxacin degradation. Scanning electron microscopy (SEM) analysis revealed the presence of spherical NiFe₂O₄ nanoparticles exhibiting enhanced surface particulate morphology and pore structure following the calcination process. This structural modification resulted in improved adsorption capabilities. The SEM images of NiFe₂O₄/CA composite films exhibited consistent catalyst performance in a DBD plasma setup across multiple cycles. Transmission electron microscopy (TEM) illustrated well-dispersed surfaces with a hollow structure and symmetrical distribution of carbon dots (CDs). Energy dispersive spectroscopy (EDS) analysis confirmed uniform dispersion of atomic components in the nanoparticles. X-ray diffraction (XRD) patterns indicated high crystallinity and effective integration of NiFe2O4 and CA, supporting their stability for reuse. X-ray photoelectron spectroscopy (XPS) analysis revealed elemental composition and oxidation status, confirming the successful incorporation of carbon dots and metal-oxygen bonds. Fourier transform infrared spectroscopy (FT-IR) validated the synthesis of NiFe₂O₄/CA composite films, while Raman spectroscopy further confirmed characteristic peaks, affirming efficient fabrication. The degradation results revealed an upsurge efficiency of 86.13 % for 10 mg/L CIP after 60 min of treatment with 9 % NiFe₂O₄/CA films, which outperformed other catalysts reported in previous studies. These findings underscore the distinctive performance of incorporating CA into NiFe₂O₄ NCs and shed light on their potential application for efficient degradation of CIP in the environment.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 8376-8387"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinetics and properties of porous alumina with a dense surface layer prepared via bimodal powder sintering","authors":"Xiang Xiao ,&nbsp;Zixu Chen ,&nbsp;Shengjian Zhao ,&nbsp;Peigang He ,&nbsp;Xiaoming Duan ,&nbsp;Dechang Jia ,&nbsp;Yu Zhou","doi":"10.1016/j.ceramint.2024.12.275","DOIUrl":"10.1016/j.ceramint.2024.12.275","url":null,"abstract":"<div><div>Porous alumina with a dense surface layer was prepared via pressureless sintering of bimodal powders followed by vacuum impregnation using a nano-alumina sol. Optimal properties (&gt;25 % porosity, &gt;500 MPa compressive strength) were achieved at 1200 °C using 6 wt% 600 nm alumina mixed with 200 nm alumina. Sintering kinetics analysis revealed that the incorporation of larger alumina powder increased the sintering activation energy by approximately 22 % at 8 wt%, with surface diffusion being the dominant mechanism during the initial sintering stage. The nano-alumina sol successfully sealed the surface pores, creating a uniform and dense surface layer that significantly improved the hydrophobicity of the material.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 8446-8453"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving energy density and efficiency in antiferroelectric-based multilayer ceramic capacitors via composition design engineering","authors":"Zhanming Dou ,&nbsp;Wei Wang ,&nbsp;Yangyang Zhang ,&nbsp;Gengguang Luo ,&nbsp;Lin Zhou ,&nbsp;Changyuan Wang ,&nbsp;Kanghua Li ,&nbsp;Shenglin Jiang ,&nbsp;Ying Yang","doi":"10.1016/j.ceramint.2024.12.276","DOIUrl":"10.1016/j.ceramint.2024.12.276","url":null,"abstract":"<div><div>Pb(Zr,Sn,Ti)O₃-based antiferroelectrics (AFEs) display good application potential in pulse power capacitors because of their large maximum polarization (<em>P</em>_max) and electric-field-induced AFE-ferroelectric (FE) phase transition characteristics. However, high remanent polarization (<em>P</em>_r), low electric breakdown strength (<em>E</em>_b), and large hysteresis loss limit the energy storage performance (ESP). To address this issue, La³⁺ ions with a smaller ionic radius and higher valence than Pb²⁺ ions were doped into the (Pb_{0.96-1.5<em>x</em>}Ba_0.04La_<em>x</em>)(Zr_0.65Sn_0.3Ti_0.05)O₃ (PBLZST) AFE ceramics in this work. This doping successfully led to a higher AFE-FE phase transition electric field and <em>E</em>_b, which is attributed to the increased stability of the AFE phase, as well as the reduction in grain size and electric conductivity. Additionally, the increased relaxor behavior results in slimmer hysteresis loops, leading to a significant improvement in the recoverable energy density (<em>W</em>_rec) and energy efficiency (<em>η</em>). The optimal ESP is obtained in the (Pb_0.885Ba_0.04La_0.05)(Zr_0.65Sn_0.3Ti_0.05)O₃ AFE ceramics, which simultaneously exhibits a high <em>W</em>_rec of 3.652 J cm⁻³ and a high <em>η</em> of 87.1%. To further improve the ESP, the multilayer ceramic capacitors (MLCCs) were fabricated, achieving a high <em>E</em>_b of 470 kV cm⁻¹ with low hysteresis due to the structural modification. Ultimately, the MLCCs display a high <em>W</em>_rec of 7.294 J cm⁻³ and an ultrahigh <em>η</em> of 95.0%. This study presents a novel approach to developing high-performance dielectric capacitors through composition and structural design.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 8454-8464"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photoluminescence properties and temperature sensing of Pr3+-Doped Li3Ba2Gd3(WO4)8 quaternary tungstate","authors":"Zhonghuan Zhang ,&nbsp;Yihao Shen ,&nbsp;Sami Slimi ,&nbsp;Xavier Mateos ,&nbsp;Shuxian Wang","doi":"10.1016/j.ceramint.2024.12.340","DOIUrl":"10.1016/j.ceramint.2024.12.340","url":null,"abstract":"<div><div>Tungstates, as an important class of hosts, have attracted widespread research interest in various optical fields, such as lighting, lasing, and luminescence thermometry. Herein, we propose novel Pr³⁺-doped Li₃Ba₂Gd₃(WO₄)₈ (Pr³⁺:LBGW) phosphors and discuss the associated temperature-sensing performance in detail. The structural characterization and composition analysis indicate the high crystalline quality of as-prepared Pr³⁺:LBGW phosphors. The following photoluminescence investigations systemically study the influences of Pr³⁺-doped concentration and excitation wavelength. Apart from the obvious ³P₀ → ³H₄, ³F₂ transitions of Pr³⁺ ions, there is also a broad host emission band with a full width at half maximum (FWHM) of 0.54 eV. The fluorescence thermometry based on the temperature-dependent Pr³⁺ and host emissions exhibits outstanding temperature-sensing capability. The maximum relative sensitivity is located in the physiological temperature range with a value of 1.72 %·K⁻¹ at 300 K, comparable to those Pr³⁺-doped tungstate luminescent thermometers. Our work highlights the versatility of Pr³⁺-doped tungstate materials in developing new-type luminescent materials, especially for temperature-sensing candidates.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"51 7","pages":"Pages 9092-9099"},"PeriodicalIF":5.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}